In these eight lectures, Dr. Scharff offers a profound overview of biodynamic methods, including the philosophy and esoteric foundations, as well as the most practical matters. In lecture 5, for example, he delves deeply into the biodynamic preparations discussed by Rudolf Steiner in his Agriculture Course, exploring each one individually: 500 - manure placed in the sheath of a horn
501 - silica placed in the sheath of a horn
502...